engineering

Pantetheine hydrolase

Pantetheine hydrolase is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Pantetheine hydrolase rather than just read about it. In short: In enzymology, a pantetheine hydrolase (EC 3.5.1.92) is an enzyme that catalyzes the chemical reaction (R)-pantetheine + H2O ⇌ {\displaystyle \rightleftharpoons } (R)-pantothenate + 2-aminoethanethiol Thus, the two substrates of this enzyme are (R)-pantetheine and H2O, whereas its two products are (R)-pantothenate and 2-aminoethanethiol. This enzyme belongs to the family of hydrolases, those acting on carbon-nitroge…

Key takeaways

Pantetheine hydrolase belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Pantetheine hydrolase to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Pantetheine hydrolase from memory before moving on to harder problems.

Reference excerpt

In enzymology, a pantetheine hydrolase (EC 3.5.1.92) is an enzyme that catalyzes the chemical reaction

(R)-pantetheine + H2O ⇌ {\displaystyle \rightleftharpoons } (R)-pantothenate + 2-aminoethanethiol Thus, the two substrates of this enzyme are (R)-pantetheine and H2O, whereas its two products are (R)-pantothenate and 2-aminoethanethiol. This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in linear amides. The systematic name of this enzyme class is (R)-pantetheine amidohydrolase. Other names in common use include pantetheinase, vanin, and vanin-1. This enzyme participates in pantothenate and CoA biosynthesis.

Further reading Dupre S, Cavallini D (1979). "Purification and properties of pantetheinase from horse kidney". Vitamins and Coenzymes Part D. Methods in Enzymology. Vol. 62. pp. 262–7. doi:10.1016/0076-6879(79)62227-9. ISBN 978-0-12-181962-0. PMID 440106. Dupre S, Chiaraluce R, Nardini M, Cannella C, Ricci G, Cavallini D (1984). "Continuous spectrophotometric assay of pantetheinase activity". Anal. Biochem. 142 (1): 175–81. doi:10.1016/0003-2697(84)90534-7. PMID 6549111. Maras B, Barra D, Dupre S, Pitari G (1999). "Is pantetheinase the actual identity of mouse and human vanin-1 proteins?". FEBS Lett. 461 (3): 149–52. Bibcode:1999FEBSL.461..149M. doi:10.1016/S0014-5793(99)01439-8. PMID 10567687. P; Galland, F; Bazin, H; Zakharyev, VM; Imhof, BA; Naquet, P (1996). "Vanin-1, a novel GPI-linked perivascular molecule involved in thymus homing". Immunity. 5 (5): 391–405. doi:10.1016/S1074-7613(00)80496-3. PMID 8934567. Maras B, Dupre S, Naquet P, Galland F (2000). "Pantetheinase activity of membrane-bound Vanin-1: lack of free cysteamine in tissues of Vanin-1 deficient mice". FEBS Lett. 483 (2–3): 149–54. Bibcode:2000FEBSL.483..149P. doi:10.1016/S0014-5793(00)02110-4. PMID 11042271. Granjeaud S, Mattei MG, Mungall AJ, Naquet P, Galland F (2001). "Vanin genes are clustered (human 6q22-24 and mouse 10A2B1) and encode isoforms of pantetheinase ectoenzymes". Immunogenetics. 53 (4): 296–306. doi:10.1007/s002510100327. PMID 11491533. Pace HC, Brenner C (2001). "The nitrilase superfamily: classification, structure and function". Genome Biol. 2 (1) REVIEWS0001. doi:10.1186/gb-2001-2-1-reviews0001. PMC 150437. PMID 11380987.

Illustrations

Worked examples

Example 1 — a first encounter with Pantetheine hydrolase

Start with the simplest possible case. Write down what Pantetheine hydrolase claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Pantetheine hydrolase before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Pantetheine hydrolase ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Pantetheine hydrolase

In research: Pantetheine hydrolase appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Pantetheine hydrolase in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Pantetheine hydrolase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 3.5.1, EC 3.5 stubs, Enzymes of unknown structure, so understanding it makes those chapters shorter.
In everyday life: Look for Pantetheine hydrolase outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Pantetheine hydrolase in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Pantetheine hydrolase means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Pantetheine hydrolase out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Pantetheine hydrolase in simple terms?

In enzymology, a pantetheine hydrolase (EC 3.5.1.92) is an enzyme that catalyzes the chemical reaction (R)-pantetheine + H2O ⇌ {\displaystyle \rightleftharpoons } (R)-pantothenate + 2-aminoethanethiol Thus, the two substrates of this enzyme are (R)-pantetheine and H2O, whereas its two products are…

Why does Pantetheine hydrolase matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Pantetheine hydrolase?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Pantetheine hydrolase.